The circular movement of the cooking foods also meant that scum or skin formed neatly in the center, making it easier to skim the residue off the top.

FORBES: Best Food Innovations Of 2012

Above that is a circular speaker that provides feedback based on your movement (detected by internal accelerometers and gyroscopes, along with pressure sensors in the sole).

ENGADGET: Google shows off hacked speaking shoe at SXSW, promises it's not getting into the footwear business